Elevator-door-operating apparatus



Nov. 18,1930 G. ALLEN 1,782,223

- ELEVATOR DOOR OPERATING APPARATUS Filed May 12. 1928 s Sheets-Sheet l m f;a

Nov. 18,1930. G. ALLEN ELEVATOR DOOR OPERATING APPARATUS Fiied May 12, 1928 a Sheets-Sheet 2 INVENTOR. Guy L /4//en A TTORNEY.

Nov.18,1930. G, L, ALLEN 1,782,223

ELEVATOR DOOR OPERATING APPARATUS Filed May 12, 1928 s Sheets-Sheet [LEI/Amie, cA/a g gvvownto'o E Guy L/H/en Patented Nov. 18 1 930.

, flumren STATES GUY L. AL EN, or DALL S; 'rnxns ELEYATOR-DOOB-QEERATINGL ArrARA'rU's Application filed May 12,

improved door operating means normally free from contact with the moving car, whereby-wearand-objectionable noises are eliminated as the car .passes the floor landing when the door is closed;

Another object of the invention is to pro: vid'ea door operating means wliich'is locked when the door is closed, whereby ,-the door is held, against opening until the device is positively operated by the operator of the car.

I provide an elevatordoor operating apparatus including a tripping device arranged tobe manually operated with only a. slight physical exertion for causing the door opening means 2:3 to lie-released and set to operate to'open the door; I

7 Another object of theinvention is to provide a vertical movable prime mover and a clamping device r connected with the] door operating means arranged to clamp said inover, whereby motion is-tran sinitted to the door operating means to close-the door.

A particular object of-the invention isto provide a door operator arranged to automatically open the door, when released, whereby nopower or labor is required to open the .doonf V A still further object of the invention isto provide aprilne mover clamping device and a lock, both actuated by a common operator.

.Alconstruction designed to carry out the invention will be hereinafter described, together with other features of the'inventi'on. The invention will be more readily under from avreading of the following specification and by reference to the accompanying'draw ings, in which an example of the invention is shown and wherein: Fig. 1 is a view partly insectio-n and partly ating mechanism constructed in accordance 'with the invention, the doors being closed.

One object or the invention'is' to provide an I A still further object of the invention is to V v I es 18 shown, or any other suitable and avail-v inelevationshowing an elevator dooiflopen 1928. Sean No. 277,181.

-Fig. 3 is a horizontalcross-sectional view taken onthe line 33,of Fig. 1,

Fig. at is a Vertical sectional view taken on the line 4 l of Fig. 1, g

Fig.1 5 is an enlarged sectional view of the clamp and lockingdevice, f p 1 Fig.- 6 is ahorizontal cross-sectional view taken on the linei6 6 of Fig.5,

Fig. 7 is avertical sectional view taken on the line 7- 7 of Fig. 5,

Fig. 8' is an enlarged cross-sectional view taken on the line 88 of Fig. 4, and

Fig-. 9fis a detail of-the tripping cam. In the drawings the numeral'10 designates an uprightsupport which may be a channel able supporting structure, Such a channel or supportis prov1ded at: each floor landin On each channel s provided a vertical trac 11, which is T-shaped, as isshown in Fig. 8.

cal channelextending therethrough, one side,

beingdefined by a groove 14. A prime mover inthe'form of an endless cable 15 extends through the channel of the housing, so as to be clamped by a follower 16 having a vertical groove175for receiving said cable.

The cable passes, around alower pulley 18 4 at the, bottom of the elevator shaft and a pulley at 19 at the top of said shaft. The pulley. 19 is driven by a reduction drive 20 (forming no part of the invention) which in turn is driven by a belt 21 from an electricmotor 22. The-belt 21 is driven by a pulley 23' connected with the motor by friction clutch24,'such as isin' common 'use, for permitting .thepulleyto slipiwhen travel of'the cable isinter- U0 rupted. p v Atjeach floor landing suitabledoors are located and I have shown a pair 'of sliding doors 25 ofthe usual construction. To the l forward door a lever 26 has'its forward end pivoted; while its 'rear end is pivoted to the outerend of a link 27 having its inner end p I pivoted to one side of the carrier 12. ,A sup- Fig. 2 IS a similar v1ew-show1ngthe doors- 50 open, I 1 7 porting arm 28 has one end: pivoted tothe side of the channel lQand the other-end-pivoted to the lever 26 inwardly of the link 27 Normally the carrier 12 and the housing 13 are locked in the, elevated position shown in Fig. 1, whereby the doors are locked in lever will fulcrum on the arm 23, which will their closed position, as will be hereinafter described. When-the carrier is released, it

will shde, due to its weight, down the track 11 to the position shown in Fig. 2 whereby the doors will be opened. As the carrier moves downwardly the link 27willpull the rear end of the lever 26 downwardly and this to nearly a horizontal position and the link the housin is clamped to the cable. 765

27 and arm 28 reach an acute angular relation, whereby the doors are securely held in their closed position.

When the motor 22 is not energized its armature and pulley 23 are free to turn in a reverse direction and consequently the cable 15 and its driving connections are free to be moved. It will'be' seen that it the carrieris clamped to the cable when said carrier is movedv downwardly the cable will be moved by the carrier and, therefore, when the motor 22 'isenergized and, placed in operation. the

cable will be caused to travel upwardly, thereby elevating the carrier.

For controlling the clamping, a bell crank lever 29 is fastened on the trunn1on'30 of an .eccentric31 journaled in the housing'13, as

is shown in Figs; 5, 6 and 7. The eccentric contacts with the follower 16 and when the lever 29 is swung in a clockwise direction,

(Fig. 5) the eccentric will be rotated so as to force the follower block into engagement with the cable 15 and thereby clamp the same. When the lever is swung in a counter-clockwise direction (Fig.5), the eccentric will be rotated away from the block, whereby the cable will be freed.

"A rectangular bolt 32 is mounted to slide horizontally in thehousing 13 and projects from the rear end o'f said housing so as to engage in an aperture 33; (Figs. 2 and 8) in the channel 10 for locking the carrier in its elevated position. A stud 34 secured in the bolt extends. through a slot 35 in the side of the housing and isjournaled in a slot 36 in the lower end of the lever 29.. When the lever 'is swung in a clockwise direction (Fig. 5),

thebolt will be drawn into the housing and withdrawn from the aperture 33 at the time When the"lever' is swung to unclalnp the cable, the

bolt will be slid from the housing into said aperture to lock the carrier in position.

or actuating the lever 29 two rollers 37 and 38 are journaled in spaced. relation on a shaft 39 on theupper end of said lever. A bar 40 secured to the sideof the channel overhangs the housing when the carrier is elevated, and is provided with a cam edge 41 in the path or the roller 37. lVhcn the carrier is elevated the roller 37 engages the cam 41, whereby the lever is swung to unclamp the cable and also to engage the bolt 32 in the re 33 to lock the carrier in position.

operating the device a vertical shoe 42 is provided on the elevator car A. This shoe is pivotally supported by a link 43 and a lever 44, both pivoted in a keeper 45 secured to the elevator car. The lever 44 is pivoted intermediate its ends and is adjustably connected with a pitman 46 on the inner side of the keeper,said pitman having adjustable connection at its upper end with an arm 47 also pivoted in the keeper. The outer end of the arm is pivoted to the upper end of a rod 48.

Normally the shoe occupies the position shown in full lines in Figs. 1 and 9 and when in such position the shoe will pass the roller 38 without engaging the latter. When the rod 48 is pulled downward the arm 47 will be swung downward, which will cause the lever. 44 to swing, through the agency of the pitman 4 to a horizontal'position whereby the shoe 42 will be swung upwardly and outwardly, as is shown in full lines in Fig. 2

and in dotted lines in Fig. 9. For operating the rod 48' to swing the'shoe a bell crank lever 49 is pivoted to the under side of the floor of the elevator car and said lever is connected by a link 50 with a bell crank lever 51 to which'the stem of a foot treadle 52 is pivoted. The stem of the treadle extends throughthe floor of the car andsaid treadle is supported by a coil spring 53.

In operating the apparatus the parts are normally in the position shown in Fig. 1 so that the doors 25 at each floor landing are closed and the carrier 12 is locked in its elevated position by the bolt 32 which is en gaged in the aperture 33. he motor 22 is idle and the shoe 42 is lowered out of the path of the roller 38 at each floor. With the parts thus arranged the elevator car may crank lever 51 is swung and through the agency of the link 50 swings the lever 49 from the position shown in Fig. 1 to the position shown in Fig. 2. This operation pulls the rod 48 downward,*whereby1the shoe 4:2 is projected into the pathof'the roller 38, as is shown in Fig.2.. As the car=moves to the floor land-- mg one of the rounded ends of the shoe will eugage"tl1e roller and displace the same so as to cause :it to ride alongthe face-off the eccentric 31 and cause .the' follower 16 to clamp the cable '15and, tl1en"withdraw the" bolt 32 from the aperture 33. The carrier,

thusbeing released, will slidedown the track plified in a door opening device normally 11, there by;opening the" doors 25 through the. agency 'of the'link 27 and the lever 26;}The carrier andhousing and attached parts are heavy enough tov swing the lever 26 and cause the openingoperation- V When the cableis c amped it will, of course, be moved: 'downwardlywith the carrie'r,.the motor and" drivin gmechanism being turned in a reverse direction, After the doors are opened the operator removes his foot from the treadle '52, whereby the shoe 42 is lowered to its inoperative position. When'it is desired to close the doorsthe operator depresses aswitchbuttonor other device to close the motor circuit (not shown) whereby the electric motor 22 is energized. The motor imparts motion through thepulley 23 and clutch 2 1-to the belt '21, which revolves the pulley 19in a'clockwise, direction 1) through the agency of the reduction drive 20.?

Thisimparts motion to. the cable 15 and the carrier 12, being. clamped to said cable, 1s thuselevated. i I v As the carrier'moves upwardly the lever 26 is swung throughthe instrumentality of the linl: 27, whereby the doors 25 are closed,

lVhen the carrier. reaches its upper position the roller 87 engages the camhwherebythe lever 29yis' swung in a counter-clockwise directiontl igs. 1 and The swinging of the ,leverloperates the eccentric 31 torelease the cable and also projects the bolt 82. into the aperture 33. :The friction clutch 24 permitsthe cable to, slip in case the follower 16 is not promptly release The operation is simple and positive,

The principle oi 'the invention is exemlocked against operation and arranged to automatically open the door when released, and

" also involving anormally idle prime mover to which the operating device is clamped when released, so that when said prime mover is energizedthe mechanism will be operated to close the door and also the mechanism will be unclamped from the prime mover and locked in positionr V V v Various changes in. the size and shape of they different parts, as well as modifications andalterations, may be made within the scope of the appended claims.

""l/VhatI c'la im, jis: I1'.-;Ina-an=' elevator door operating apparatus, door operating means, automatic door openingmeans connected with said door-operating means and normally locked against operation when the door is-closed, means carriedby the elevator carfor releasingthe automatic opening means, a prime'mover, meansfor connecting the open ng means with the prime mover when the door is opened to'ca'use said door toclose uponthe actuation of said prime-mover, andmeans for releasing the opening means from the-prime mover when,

the door is closed;

2. In an elevator door operating apparatus, door operating 'means, vertically movable I opening means connected to the operating means, a lock connected to the open ng means Q to lock the sa-mejin-position when the door iS closed," means; for actuating-the lock to re lease the opening means, and'means to actuate the lock to prevent actuation of the dooropening means. 7

3. In. an elevator door operatingapparatus, door operating means, vertically movable opening means connected to the operating means; a lock connected to the opening means to lock thesame in position :when the door is actuating the movable door opening means to 4 closet-he door, and means to actuate the lock closed, means for actuating the'lock to release to prevent actuation of the door opening means.

"4;. In an elevator door operating appara; tus, door operat ng means, vertically movable I door opening means connected to the door op era-tin g means, means for locking the opening means in an elevatedposition, means carried I by the elevator car forreleasing the-locking means to permit the opening means to move! downwardly to open the door, means for elevating the} door opening means to close the" door,-and means for actuating :the locking means when the door means is elevated to its locking position; p a I 5. Inan elevator door. operatingappara tus, door operating elements,ia carrier con nected with saidelements and mounted for vertical movementand arranged to slide downwardly under its own-inertia to open the door, a primemover, a clamp carried by thecarrier, and means carried by the 'ele-' vator car to actuate theclamp to engage the prime 'mover afor closingthe door..

6.. In'an'elevator door operating apparatus, door operatingelements, aicarrier connected with said elements and .mounted .for

vertical movement. and arranged. to slide downwardly under itspown inertia. .to open the door, a prime mover, a clamp'cfarriediby the .carrier,means carried -theelevator. car to; actuate the clampto engage the a prime mover, aridmeans for, actuating the, clamp to release. it:,from:the prime mover.

7 In an elevator door operating apparatus, door operating elements, a carrier connected with said elements and movable vertically to operate said elements to open and close a door, a lock carried by the carrier for holding said carrier in an elevated position, 1

and means carried by the elevator car for actuating thelock to release the carrier and permitthe latter to move downwardly, and means for elevating the carrier.

8.= In an elevator door operating appara tus, door operating elements, a carrier con- ,nected with said elements and movable vertically to operate said'elements to" open and close a door, a lock carried by the carrier for holdingsaid carrier in an elevated position,

' means carried by the elevator car, for actuating the lock to release the carrier to'allow the latter to slide downward by gravity and actuate the connecting means to open the door.

10. In an elevator door operating appara- 's'tus, the combination witha movable door,

of a vertically slidable carrier, operating means connecting the carrier with the door, a lock carried by the carrier for holding the latter elevated and .thedoor closed, means carried by the elevator car for actuating the lock to release the carrier to allow the latter to slide" downward by gravity and actuate the connecting means to open the door and means for elevating the carrier to closethe door.

11. In an elevator door operating apparatus, the combination with amovable door, of

a vertically slidable carrier, operating means connecting the carrierwith the door, a lock carried by the carrier for holding the latter elevated and the door closed, means carried by the elevator car for actuating the lock'to release the carrier to allow the latter to slide downward by gravity and actuate the connecting means to open the door, a vertically movable member, and a clamp attached to the carrier and set to clamp the said member when the carrier is released.

12. In an'elevator door operating apparaans, door operating means, a vertically slidable carrier directlyconnected to said operating means, a'lock carried by the carrier, a vertically movable member, a clamp c'arried by the carrier for engaging the said member,

an element carried by the carrier for actuating the lock and the clamp, and means carried by the elevator car for actuating the said element to release the lock and engage the clamp. 1 r

13. In an elevator door operating apparatus, door operating means, a vertically slidable carrier directly connected to said operating means, a lock carried by the carrier, a vertically movable member, a clamp carried by the carrierior engaging the said member, an element carried bythe carrier for actuating thelock and the clamp, means carried by the elevator car for'actuating the saidiel-ement to release the lock and engage-the clamp, and means in the path of said element to actuate it to release the clamp and engage the lock;

14L. In an elevator door-operating appara tus, the combination with a horizontally slidable elevator door, of door operating means connected with said d'oor,;automatio door opening means connected with said door operating means and normally locked against operation when said dooris closed, a door closing element normally disconnected from the opening means, means for releasing the door opening means to open the door and for causing said means to connect with the closing element, and means for actuating said door closing element to close the door.

15. In an elevator door operating apparatus, the combination with'a horizontally slidable elevator door, of elements for sliding said door horizontally connected thereto, a vertically slidable automatic door opening member to which said door sliding elements are connected, means directly engaged with said vertically slidable member for locking it against movement, whereby said door is closed, means carried by the car for releasing said door operating member to permit it to slide downward to actuate the door sliding elements to opensaid door, and means for engaging said member and elevating it to close said door.

In testimony whereof I affix my signature.

r GUY L. ALLEN. 

